Paper-material container and the like



W. L. WRIGHT.

PAPER MATERIAL CONTAINER AND THE LIKE.

Patented July 4, 1922.

APPLICATION FILED JUNE I9, 1918.

2.8HEETS-SHEET 1.

W. L. WRIGHT.

PAPER MATERIAL CONTAINER AND THE LIKE.

APPLICATION FILED JUNE 19, 1918.

Patented Jul 4, 1922.

2 SHEETS-SHEET 2.

nireo s'rara srarnnr orrics.

WILBUR L. WRIGHT, 0F FULTON, NEW YORK,.ASSIGNOR TO SEALRIGHT (30., ENG, 033

. FULTON, NEW YORK, A CORPORATION OF NEW YORK.

PAPER-NATERIAL CONTAINER AND THE LIKE.

insects.

Specification of Letters Patent.

Application filed June 19, 1918. Serial No; 240,815.

To all whom it may concern.

Be it known that I, WILBUR L. WRIGHT, a citizen of the United States and resident of Fulton, county of Oswego, State of New York, have invented certain new and useful Improvements in and Relating to Pa er- Material Containers and the like, of w ich the following is a specification.

This invention relates to certain improvements in aper material cans or containers; and the 0 jects and nature of the invention will be readilyunderstood by those skilled in the art in the light of the following explanation of the accompanying drawings illustrating what I now believe to be the preferred mechanical expression or embodiment of my invention from among other forms, constructions and arrangements with in the spirit and scope thereof;

Cylindrical paper cans having flanged slip covers are manufactured in this country in large quantities and are used for many purposes. However, these cylindrical cans cannot be nestedfor packing and shipment, and hence are not economical in the matters of space occupied for shipping and packing purposes, and freight, cartage and storage charges.

Frustoeconical or tapered paper container bodies have been proposed to permit nesting of such bodies for packing and shipment to save space and freight costs. However, difliculties have beenv encountered in placing such proposals on a commercial manufac turing basis because of problems involved in the economical quantity production of' tapered or (so-called) conical bodies and closures therefor, particularly the latter.

Serious difficulties have been encountered in providing proper closures for such conical bodies that can be economically manufactured on a quantity basis and that will meet trade requirements.

An object of this invention is to provide a paper can or container embodying a body having a large open end or mouth andformed or shaped for nesting with other bodies of like formation, as of tapered or frusto-conical shape, and a flanged slip cover for closing said open end and formed to removably slip to and from the body and maintain its position closing the same by reason of the elasticity of either the body or the closure flange or both.

A further object of the invention is to ings provide a nesting or ta "ainer body open at its removable flanged slip cover for said end, said body and cover being of such formation and structure as to permit economical quantity production thereof by appropriate machinery.

The invention consists in certain novel features of construction and in combinations and arrangements as more fully and articularly set forth and specified hereina ter.

Referring to the ered paper con- Fig. 2, IS a longitudinal section of a portion of a nesting or tapered paper can body showing a modified form of slip cover.

. Fig. 3, shows the cover and body of Fig. 1', separated with the cover resting on the top edge of the body ready to be forced down thereon.

Figs. 4, and 5 are sectional views illustrating modified formations.

In the drawings, I show paper can or container bodies 1 of frusto-conical form, tapering from their upper or large open ends or mouthsto their lower or small ends, which lower ends or bases are permanently closed or sealed in any suitable manner or by any suitable closure 2 or other means. Each tapered body is usually formed by folding afiexible paper blank over a suitable tapered mandrel so that the longitudinal edges of the blank will overlap. These longitudinal edges are united by a suitable adhesive to form the tapered body with a permanent liquid tight longitudinal seam or joint 3 extending throughout the length of the body. The small end of the body is then closed and sealed by the application of any suitable permanent closure, which if so desired can be a flanged paper disk united to the lower end of the tapered body wall by crimping, although I do not wish to so limit my invention.

In the form illustrated by Fig. 1, of the Patented July 4, 1922.]

arge end with a accompanying drawdrawings, the body is of uniform taper can be more or less closely nested one within the other for packing and great economy in space will be thereby attained and also able without such mutilation as will destroy the nested bodies will brace and strengthen each other against damage by crushing or distorting pressure.

The users of pa er cans and containers require simple easi y applied top closures that will ordinarily effectively close and seal the container and are readily removtheir usefulness as covers. The users of paper cans have become accustomed to more or less tightly fitting cylindrical flanged paper slip covers and as such covers have been long employed on the cylindrical paper cans of commerce and the utility and advantage thereof have been established by long use, it is an object of my present invention to provide and combine a tapered nesting paper can with a paper cover of this type.

In the specific construction of Fig. 1, I show a one-piece paper materialcover 7, pressed or struck up from a paper blank and having a flat top and a depending continuous flange 8 having a normally cylindrical outer surface. The lower end of this flange is more or less tightly rolled, curled or crimped upwardly and inwardly to form the continuous permanent annular inner bead or crimp 9 to materially reduce the internal diameter of the lower end of the cover and to form said lower end of the cover with a smooth annular inner surface for closely and snugly engaging the exterior surface of the tapered can body. The internal diameter of the upper portion of the cover, the upper end of the flange, is approximately equal to the exterior diameter of the upper extremity of the can body, and the under face of the flat top of the cover particularly at the unction between said top and the flange is arranged to snugly seat on the top edge of the tapered can body and more or less tightly close and seal the same.

The cover is of substantial length longitu-- dinally, i. e. vertically, and the internal diameter of the lower end of the cover (the cylindrical flange) is less than the external diameter of the upper end of the tapered body surrounding the mouth of the can, but either the body or the cover is more or less flexible or elastic or both the cover and body are elastic or flexible, and hence the small lower end of the cover can be forced onto the large upper end of the body and down on and surrounding the exterior thereof until the cover seats tightly on the flat top edge of the body and the beaded or rolled lower end of the cover flange tightly embraces the exterior of the body a distance below the upper edge of said body. The rolled lower end of the cover engages the exterior surface of the body along a line where the body diameter is less than that at the upper end of the body, yet the body diameter along the line engaged by said rolled end is preferably in excess of the normal internal diameter of the lower end of the cover so that a more or less tight frictional sealing contact is maintained between the surfaces of the roll and body with the parts under tension.

When the cover is removed, the wall of either the cover or the body, or both, flex under tension, to permit the contracted lower end of the cover to slip past and from the enlarged upper end of the body. The rolled orrounded end edge of the cover facilitates, with a cam action, the flexing of the paper flange or wall when the cover is being forced on the body, so that the contracted end of the cover slips onto and past the enlarged upper end of the body.

The cover described can be easily and economically produced in quantities by machinery and when combined with a tapered body possesses the advantages and performs the functions of the cylindrical cans and slip covers of commerce and meets trade requirements with respect thereto.

If so desired,-the large upper end of the paper wall of the tapered body can be formed with an inward and downward approximately tight roll, bead or crimp 1 (see Fig. 4) surrounding the mouth of the can and forming the same with a rounded sealing shoulder or surface to closely lit in the angle of the cover and also to cooperate with the rounded surface of the contracted end of the cover in flexing the parts to expand the cover or contract the body wall to permit passage of the cover onto the body. The rolled edge of the body doubtless adds to the elasticity thereof although stiffening the same and is also of advantage in nesting to prevent the bodies unduly adhering to eachother.

In Fig. 2, I show the can body of Fig. 1, and a flange slip cover the same as that shown by Fig. 1, except that the cover is.

composed of a flanged paper disk 7, and a cylindrical paper tube 7", surrounding the disk and united thereto by crimping together the upper end of the tube and the flange of the disk to form a lock crimp 7, as will be well understood by those skilled in the art.

The lower end of the cover thus formed, is contracted by an inward roll or crip 9, as hereinbefore described. This two-part or built up cover can be employed in all the various modifications illustrated.

In Fig. 5, I show the tapered paper wall of the can formed with an enlarged rounded seat or shoulder around its open end by rolling or crimping the paper wall outwardly, downwardly and inwardly forming an exterior rolled edge 10, instead of the interior rolled edge hereinbefore mentioned. Where this exterior shoulder 10 is thus formed, the lower end of the flange of the cover can be formed with a more or less open inwardly and upwardly rolled edge 11, more or less compressible and elastic, to slip past and catch under the shoulder when the cover is forced down over the large end of the body, and to compress as the cover and body lwadlls flex when the cover is pulled from the It is evident that various changes, modifications and variations might be resorted to without departing from the spirit and scope of my invention and hence I do not wish to limit myself to the exact disclosures hereof.

What I claim is 1. A paper can having a tapered body for nesting, the mouth of said can being at the tapered large open end thereof, said body being flexible and having its top edge crimped downwardly around said-open end, in combination with a slip paper cover for closing said large open end of the body, said cover having a deep substantially-straight resilient flange at its free end forming a rolled or crimped edge to cooperate with the large top edge of the body and with a portion of the body below said ed e.

2. A can body having a flexi%le paper-material wall tapered for nesting, the large tapered end of said flexibletbod forming a top edge around the mouth 0 the can, in combination with a removable flexible paper material slip cover for closing said mouth and formed to close down on said top edge, said cover embodying'a deep substantially straight resilient depending flange formed to snugly fit the annular side face of the large top edge of said body, the free end of said flange being turned upwardl to snugly fit the annular portion of said ody of reduced diameter a distance below said top edge.

3. A paper can tapered throughout its length for nesting and open at its large end,

the wall of the can around said open end being flexible, incombination with a removable cover having a deep substantially straight resilient flange, said cover sealin and seating against the and edge of sa1 body end, and the free end of the flange of said cover being crimped and annularly seatin and maintained under tension against said body a distance below said end edge the portion of the flange above said crlmpe end snugly and circumferentially fitting said large end. 7

4. A paper-can having its body tapered throughout its length for nesting and open at its large end, in combination with a rea movable slip cover adaptedto tightly fit and close said end and,having a deep substantially straight resilient flan e with an internal diameter approximate y equal to the greatest external diameter of said end and at its-lower free end contracted to an internal diameter substantially less than said external diameter and arranged to snugly fit the body a distance below said end, the free and of said flange being crimped.

rolled rounded edge around said end, in

combination with a flexible paper slip ea removably fittin and closing said end an having a deep su stantially straight resilient flange at its lower end formed with a rolled. rounded edge.

6. A paper can having a longitudinally tapered large open end, in combination with a removable paper slip cover closing said end and havinga deep substantially straight resilient flange surrounding said end under tension and at its lower edge crimped-tofit the surface thereof a distance below the large end edge of the bod said cover seating against the end edge 0 the body, the internal dlameter of the lower end of said flange being less than the external diameter of the large end edge of the-body.

7. A paper can tapered throughout its length and open at its large end, in combination with a paper-material slip cover for said large end having a deep substantially straight resilient flange, the lower'end of said flange formed with an internal crimp or roll rendering the internal diameter of the lower end of the cover slightly less than the exterior diameter of the body ata point a distance below the large end edge of the body about ual to the distance from said roll to the un er surface'of the cover top.

8. A paper can having an open end and formed with a crimped or rolled edge around the end opening in combination with a removable slip cover closing and fitting said end and formed to fit the top edge of said can and having the lower end of its flange formed with a crimp or roll to cooperate with said rolled edge and to fit the can under tension a distance below its top edge, said flange being deep substantially straight and resilient.

9. A paper can consisting of a tubular body tapering from one end to the other for nesting and composed of a paper material blank having its ends secured together forming a permanent tight seam throu bout the length of .the body, a permanent c osure at the small end of said body secured therein by crimping, and a removable top flan (1 paper material slip cap for the large on of the tapered body said cap having a deep substantially straight resilient flange, said cap seating on the top edge of the body with the free end of said flange annularly fitting the portion of the body below and of reduced diameter with respect to said to edge under tension, said top-end of the ha y and cap flange being relative] formed and resihent to permit remove and application of the free end of the flange from and over :said large end of the body. 

